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OpenSSL Constant time flag not preserved in DSA signing (CVE-2016-2178)

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OpenSSL Constant time flag not preserved in DSA signing (CVE-2016-2178)

Severity
2
CVSS
(AV:L/AC:L/Au:N/C:P/I:N/A:N)
Published
06/19/2016
Created
07/25/2018
Added
09/23/2016
Modified
01/08/2018

Description

The dsa_sign_setup function in crypto/dsa/dsa_ossl.c in OpenSSL through 1.0.2h does not properly ensure the use of constant-time operations, which makes it easier for local users to discover a DSA private key via a timing side-channel attack.

Solution(s)

  • http-openssl-1_0_1-upgrade-1_0_1_u
  • http-openssl-1_0_2-upgrade-1_0_2_i

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